core-js/modules/es.typed-array.fill.js

'use strict';
var ArrayBufferViewCore = require('../internals/array-buffer-view-core');
var $fill = require('../internals/array-fill');
var toBigInt = require('../internals/to-big-int');
var classof = require('../internals/classof');
var call = require('../internals/function-call');
var uncurryThis = require('../internals/function-uncurry-this');
var fails = require('../internals/fails');

var aTypedArray = ArrayBufferViewCore.aTypedArray;
var exportTypedArrayMethod = ArrayBufferViewCore.exportTypedArrayMethod;
var slice = uncurryThis(''.slice);

// V8 ~ Chrome < 59, Safari < 14.1, FF < 55, Edge <=18
var CONVERSION_BUG = fails(function () {
  var count = 0;
  // eslint-disable-next-line es/no-typed-arrays -- safe
  new Int8Array(2).fill({ valueOf: function () { return count++; } });
  return count !== 1;
});

// `%TypedArray%.prototype.fill` method
// https://tc39.es/ecma262/#sec-%typedarray%.prototype.fill
exportTypedArrayMethod('fill', function fill(value /* , start, end */) {
  var length = arguments.length;
  aTypedArray(this);
  var actualValue = slice(classof(this), 0, 3) === 'Big' ? toBigInt(value) : +value;
  return call($fill, this, actualValue, length > 1 ? arguments[1] : undefined, length > 2 ? arguments[2] : undefined);
}, CONVERSION_BUG);